Sewerage Act Article 3

The competent authority referred to in this Act is the Ministry of the Interior at the central government level, the special municipal government in special municipalities and the county or city government in counties or cities.
中文原文 下水道法第3條
本法所稱主管機關︰在中央為內政部;在直轄市為直轄市政府;在縣(市)為縣(市)政府。

English translation for reference only; the Chinese text prevails. Not legal advice.